Spark-arrester.



L. A. SWEM.

SPARK ARRESTER.

APPLICATION TILED MAY 9, 1911.

1,065,985. Patented July 1, 1913.

Suva/id om Lou/ls- ,6. 50/617) LOUIS A. SWEM, OF BELLINGHAM, WASHINGTON.

SPARK--ARRESTE1L Specification of Letters Patent.

Patented July 1, 1913.

Application filed May 9, 1911. Serial No. 626,049.

To all 'HJILO'H'L 2'! may concern:

Be it known that I, LOUIS A. Swen, a. citizen of the United States of America, and tI-IGSldGlll] of thecity of Bellingham, in the county of lVhatcom and State of \Vashington, have invented certain new and useful' Improvements in Spark-Arresters, of whicht-he following is a specification.

.My invention has for a fundamental object, to provide a device of the above type which will operate in an etlicient manner to prevent the escape of sparks, cinders and unconsumed particles of fuel from the stack through the subjection of the smoke ema na-ting' from a furnace to the action of a fluid sprayed or discharged into the same in a finely divided state.

A further. object resides in the provision.

of novel means for promoting draft.

\Vith the above and other ob ects in view,

to be referred to as my description progresscs, my invention resides in the features of construction, arrangements and combina tions of parts hereinafter described and succinctly defined inm'y annexed claims; Y

Referring to the accompanying drawing,

wherein'like numerals of reference indicate like parts throughout the several views:

Figure 1 is a frag entary vertical section illustrating my invention, as in use. Fig. 2

' is a top plan of my rotary fluid delivery means, and Fig. 3 is a section taken on line 33 of Fig. 1.

In referring to the drawing by numerals of reference, 1 indicates a smoke stack, conveniently having its lower end portion enlarged, and in the form of acylindrical sec- 7 tion 2,and provided with an internal shoulder or intercepter 3 and a collector 4, said interceptor and collector being arranged in vertical alinement and comprising inwardly projecting annular edge flanges of said section 9 and having'their free edge portions turn ed toward one another and secured, as

by rivets as shown, to the lower edge of the upper or reduced section of stack 1 and to the flange 5, of a boiler 6, respectively.

ll'ithin thestack section 2, I provide fluid delivery means comprising superimposed rotary jets 7, and 8, of the reactionary type, consisting of hollow heads having outwardly projecting nozzles 7 8 respectively which are provided in their-outer end portions with discharge orifices 9, arranged to discharge rearwardly relatively to the direc: tion of rotation of their respective jets,

.ceive fluid from pipe 12.

which jets, as will be observed, are normally operated in opposite directions.

In practice, jets 7 and 8 are mounted for rotation on a hollow spindle 10 with their heads in comnmnication with suitable ports 10 thereof. Spindle 10 is connected at its opposite end portions with pipes 11 and 12 leading to suitable sources of steam and water respectively. Suitable valves, as 13, 11 and 15 are provided in pipes 11 and 12 and in a connecting branch 12' thereof, respectively.

Reference numeral 16 indicates a deflector adjustably secured, by a set screw 16' on spindle 10 beneath jets. 7 and 8, for movement toward and from the latter, as may be desired for directing the smoke outwardly in an upward direction to the intercepter 3. In this connection, it will be observed that jet 7 has the free end portions of its nozzles 7 turned upwardly to direct the fluid for discharge into stack 1 above intercepter 3, and thus, when operating as a spark arrester, said jet 7 will provide virtually a wall of fluid extending above and substantially parallel with the direction of deflection of the escaping products'as effected by deflecter 16.

' Reference numeral 17 indicatesa downwardl'y closing flap valve, arranged in spindle 10 intermediate jets 7 and 8, by which jet 8 is cut off from communication with pipe 11, while both of the jets can re- Thus, assuming that the device is to be used as-a blower, valves 14 and 15 are closed and. valve 13 opened. Steam discharging from jet 7, is directed upwardly at a slight angle to the axis thereof, and thereby reacts to impart rotary movement to the jet, as is well understood. Fan blades, as 18, are provided on jet 7, conveniently on the nozzles 7' theredesired to admit water which will discharge through jet 8, valve 17 being held closed by the preponderance of pressure of the steam in the upper portion of s indle 10. lVith valves 13 and 14 closed an valve 15 open, water is admitted through pipe 12 to both jets which, as heretofore set forth, direct the water for discharge in opposite directions, jet 8 discharging substantially horizontally over deflector 16' and collector 4, in which latter the fluid and intercepted material precipitate, and jet 7 discharging upwardly into the upper portion of stack 1.

Having thus described my invention what I claim as new, and desire to secure by Letters latcnt of the United States of America, is:

1. in a device of the type set forth, a conduit for the products of combustion, provided with anenlarged portion having inturned substantially liorimnually disposed concave upper and lower \val? portions one overlying the other, means in said conduit for deflecting the products -d' combustion upwardly toward the upper concave, wall portion of said conduit, and means for discharging fluid into the prodts of combustion at a point above said irst means and said concave loner wall perilous.

2. In a device of the type set forth, a conduit for the products of ombustion pro vided with an enlarged portion having intui'ned substantially horizontal concave up per and lower wall portions one overlying the other, means in said conduit above the lower concave wall portion thereof for defleeting the products of combustion upwardly toward the upper concave wall portion of said conduit, a hollow spindle in said conduit, means :for'supplying fluid to said spindle, and a-jetrotatably mounted on said spindle in communication therewith for di-' recting the fluid outwardly from said first means. A

3. In a device of the type. set forth, a conduit for the products of combustion, a hollow support in said conduit, a valve in said support, independent, fluid discharge means supported by and communicating with said support on opposite sides of said valve, and independent fluid conducting means communicating with said support on opposite sides of said valve. 4. In a device of the type setforth, a conduit for the products of combustion, a hollow support in said conduit, independent fluid discharge means arranged one above the other on said support and communicating therewith, a valve in said support between said fluid discharge means, and independent fluid conducting meanscom nunieating with said support on opposite sides of said valve.

5. In.a device. of the type set. forth, a conduit for the products of combustion, a hollow support in said conduit, independent fluid discharge means arranged one above the other on said support and communicating therewith, a valve in said support between said fluid discharge means, a supply pipe communicating with said support on one side of said valve, a second supply pipe communicating with said support on the 0pposite side of said valve, valves in said supply pipes, a pipe connecting said first named pipes, and a valve in said last named .pipe.

j means in. said conduit for deflecting the products of combustion toward said interceptor, means for directing fluid crosswise of said conduit intermediate the intercepter thereof and said first means, and other means for discharging fluid upwardly into said conduit above the intercepter thereof.'

7. In a device of the type set forth,a conduit for the products of combustion having a portion of its length provided with an inwardly projecting intercepter, means in said conduct for deflecting the products of combustion toward the intercepter thereof, means for directing fluidcrosswise of said conduit intermediate its interceptor and said first means, and other means arranged below the interceptor of said conduit for directing fluid upwardly into said conduit to a' point above its intercepter.

S. In a device of the type set forth, a conduit for the products of combustion having a portion of its length provided with an intercepter extending around its inner face, means for deflecting the products of combusticn toward the intercepter of said conduit, rotatable means for discharging fluid crosswise of said conduit above said first means, and a second rotatable means arranged below the interceptor of said conduit for directing fluid upwardly into said conduit above the interceptor thereof.

9. In a device of the type set forth, a conduit for the products of combustion having its lower portion provided on its inner face with an intercepter comprising a shoulder, a spindle in said conduit adapted to be connected with a source of fluid supply,rotatableiluid discharge means comprising a pluralitiv of members arranged. one above the other on said spindle in communication with the latter for delivery of fluid in outwardly day of April 1911.

LOUIS A. SWEM. Witnesses:

F. L. VERNON, C. A. SEARS. 

